Oil burner



Oct. 28, 1930. c; RA'YHELD 1,779,680

OIL BURNER Filed Nov. 5, 1924 Patented Oct. 28, 1930 cHARLEs L. RAYFIELD, ono IcAG ILLrNoIs; essreivonmo RAYFIEL MA UFACQ TURITNGCQMPANYQACORPORATION or rLLrivors" j s i OIL BuRiIEB Application filed November 1924. serial na-rezsql, j I

This invention relates to an oilrburner especially adapted for use in connection with furnaces or the like. 1 v

It is an object of this invention to provide an oil' burner in which liquid fuel is not preheated, but on the contrary'is maintained more or less cool in order to prevent carbonizat'ion at the exit of the burner and from whichethe flame emerges in a conical orfiaring manner. 7 p a It is a further object of thisvinvention to provide means for catching and consuming any surplus or dripping of liquid fuel.

l/Vit'h these and other objects in view which will become more apparent in the following description anddisclosures this invention comprises the novel structure and combinae tions hereinafter described and more particularly pointed out and defined in the appended claims.

trate a preferred embodiment of'this invention and in which similar reference numerals"; refer to similar features in the different r V I V be supplied with'th'is fuel mixture of oil and p 'air from anysuitablemixingchamberorap- Figure 1 is an elevational view of aburner, i

views.'

On the drawings:

' partly broken away to show my improved burner therein. e

burner showing parts in "elevation.

oil feeding nozzle with parts in elevation.

Figure 4 is an enlarged sectional view of a removable plug constituting the lower end of the nozzle with the sprayingtipin eleva- H v p I p i tip 1 1 having a'jtoothed-surface projects-into the chamber 12.-

will brea k up and thoroughly atomize' *the"fuel -and 'cause a spraying action. A" conical flamedeflector tip or member.

' Referring to the/drawings, it will be observed that there is illustrated a furnace 1 into which the oil burner projects through a suitable opening. A crucible 2 is embedded incrushed brick or the like in the bottom of l the furnace and serves as a catch basin for Figure 2 is a sectional view throughthe *heavy particles ofoil or the like? the I I crushed brick'is usually "glowing during the I i fuel supply pipe which-carriesa fuel mixto said shank. The fuel supply pipe :9 may paratus.

merges into an enlarged bore or'l'channel 12 A-plurality of fuel outlet ports 13 in the upper 'e'nd fof the plug communicate with the passage 11 whereby the fuel In ay escape fromthe nozzle." A conical "sprayln'g producing 15 extends coaxially of the tip" 14;" and is pothe passage 11 and threaded in the, upper vapor downwardly to the'crucible andfire operationof the burner, the fuel deposits" in e o the crucible 2 will beignit'ed' and-will be consumedh The fuel burner comprises a hollow-globelike casingg supported :upon the end of an 'air'supply pipe i. :T'he fcasing fhas' a restricted opening or venturi 5 at itslower end.

'Tlie fuel nozzle 6fis supported 'within the" globedike casingby'jbeing threaded in the upper endfthereof, and extendsbeyondfthe e.

I venturi." 1. ff e I I i Thej fuellnozzle consists :of an-uppef"*section 6 and a lowerisection 6 which have a threaded union, and which have heat radiating fins' 'Z. A hub 8 surrounds il-portion of V the uppersection 6; a hollowi externally threaded? shank integral with thehub f communicate's with the interior, of the: nozzle? In the accompanying drawings which illus I .ture of properlyproportioned oil and air and extends throughthe air pipe is connected "A; hollow plug 1O isthreadedinthelower Y end of the nozzle. 1 The inner end of the-plug has 'a threaded 1' there which emerges into a slightly. enlarged passage 111' which" inturn Figure 3 is a verticalsection through the sifiolied' therebelow; A rod 16jsmaller than Figure 7 is a top plan View of the spraying blast before itstrikes the fuel.

brick heating the same to incandescence, the flames will be deflected to the sides and rise along the wall before the generated heat es capes through the flues. In this way, the flame travels twice the usual distance in the flre box and completing perfect combustion beforereaching the flues. It will alsobe appreciated that the nozzle is air cooled tion withthe wall of the casing diametrically opposite to said opening, a fluid supply pipe extending into the casing through said air tube, said nozzle'being in two alined sections, and a coupling between the fluid pipe and the nozzle detachably engaged by the-sections of the nozzlewhereby the latter may be separately removed from "the casing through the blast of air acting on the h'eafithrou'gh its discharge opening.

radiating. fins sojth'ata in :connectionxwith :the complete combustion. afforded, noliobjectiom able carbonization will occur. Itwillalso be Intestimonywhereof I: haverhereunte subscribedpmyname.

CHARLES L. RAYFIELD.

noted that the venturi will spread theair l r And on account of the conical tip of the'burnenthe fuel will be spread out into a flaring or conical form, whereby the same becomes thor oughly mixed ,with the airgreatly aiding combustionzthereby. i

' Because: of the provision of a venturi r around the nozzle, which in .itselfwcarries a mixture ofoil and air, there is in effect a'doui ble.atomization which results in aIhi ghly combustible fueLmiXture. U V -I am aware. that many 'changesmay'bc 7 made, and numerous details of construction may be-varied through. EL'WlClG range without departing from the principles of thisinvention,and I therefore donotpurpose limiting the necessitated by the prior art. I .claim as my. invention patent granted hereon, otherwise than 1. In combination, an air tube having one 7 end terminating in a hollow globe-like nozzle disposed at an angle to the tube, aliquid supply line extending through said tubeflinto -said nozzle,: a liquid projecting member having one end connected to the wall of said noz- -zle and having itsother end terminating in the'discharge orifice of said nozzle, a connection between said end of the supplylineand an intermediate portion of said projecting member, and a tubular plug. detachably mounted in the discharge end of. said projecting member including, a conical.e1ementdis'- posed in one end of said plugzan d cooperatingwith said plug to define a ring-likeppen ing through which the liquid is discharged.-

7 2; In an oil burner, a hollow globular casling formingftherein an'air passage and. havmg a lower. dlscharge open ng 'and aconfstricted portion immediatelya-boveits discharge opening .forminga venturi,.the wan.

10f said casing being flaredabruptlyfromzits constricted. portion to said opening,-. anda fuel nozzle diametricallywithin said casing,

having a fuel spreading. memberkatlitsdischarge end below the venturi and withinsaid flarin -discharge opemng.

=3. fn a burner, man -tube,fa; casing; it O I which said tube leads L having qtheihollofw 

